In article .com,
"DavidM" wrote:

Jay Honeck wrote:

So we've reached 500 hours on our Lycoming O-540. All is well, and it
continues to run like a champ, using little oil. (Although we still have a
minor drip that's driving us nuts...) and pulling like a tractor.

So what needs to be looked at when 500 hours is reached? I know there's a
Service Bulletin to inspect the impulse couplers, but what else needs to be
done?

It might not be a bad time to have your mags taken apart and inspected.
You can also have your oil cooler flushed, to clear out any junk left
over from the engine break-in. Some people replace their vacuum pumps
regularly, but that depends on the age of the pump, not the engine.


All the best,


David



Mags should be inspected THOROUGHLY every 500 hours, so would make sense
at 1000!
LOL

--
Chris Schmelzer, MD